新手问题 Rails 4.2.0 rake db:migrate 报错
== 20141202071009 CreateUsers: migrating ======================================
-- create_table(:users)
-> 0.0032s
== 20141202071009 CreateUsers: migrated (0.0033s) =============================
rake aborted!
StandardError: An error has occurred, this and all later migrations canceled:
wrong number of arguments (1 for 0)/home/atom/.rvm/gems/ruby-2.1.2/gems/activerecord-4.2.0.beta4/lib/active_record/connection_adapters/abstract_adapter.rb:271:in `initialize'
反复试了几次都是这样，有同样遇到这问题的吗？
Rails 4.2.0.beta4 依赖的 arel 有问题，会导致迁移报错。在 Gemfile 中把 Rails 的版本号改为 4.2.0.rc1。
